The AIX /etc/passwd, /etc/security/passwd, and/or /etc/group files must not contain a plus (+) without defining entries for NIS+ netgroups or LDAP netgroups.

Overview

Finding ID	Version	Rule ID	IA Controls	Severity
V-91671	AIX7-00-001047	SV-101769r1_rule		Medium

Description
A plus (+) in system accounts files causes the system to lookup the specified entry using NIS. If the system is not using NIS, no such entries should exist.

STIG	Date
IBM AIX 7.x Security Technical Implementation Guide	2020-02-24

Details

Check Text ( C-90825r1_chk )
Check system configuration files for plus (+) entries using the following commands: # cat /etc/passwd \| grep -v "^#" \| grep "\+" # cat /etc/security/passwd \| grep -v "^#" \| grep "\+" # cat /etc/group \| grep -v "^#" \| grep "\+" If the "/etc/passwd", "/etc/security/passwd", and/or "/etc/group" files contain a plus (+) and do not define entries for NIS+ netgroups or LDAP netgroups, this is a finding.

Check Text ( C-90825r1_chk )

Check system configuration files for plus (+) entries using the following commands:

# cat /etc/passwd | grep -v "^#" | grep "\+"

# cat /etc/security/passwd | grep -v "^#" | grep "\+"

# cat /etc/group | grep -v "^#" | grep "\+"

If the "/etc/passwd", "/etc/security/passwd", and/or "/etc/group" files contain a plus (+) and do not define entries for NIS+ netgroups or LDAP netgroups, this is a finding.

Fix Text (F-97869r1_fix)
Edit "/etc/passwd", "/etc/security/passwd", and/or "/etc/group" files and remove entries containing a plus (+).